JP2007159984A - Golf club head - Google Patents

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JP2007159984A
JP2007159984A JP2005363560A JP2005363560A JP2007159984A JP 2007159984 A JP2007159984 A JP 2007159984A JP 2005363560 A JP2005363560 A JP 2005363560A JP 2005363560 A JP2005363560 A JP 2005363560A JP 2007159984 A JP2007159984 A JP 2007159984A
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coating film
golf club
club head
face
thickness
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JP4816059B2 (en
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Ko Saka
航 坂
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Bridgestone Sports Co Ltd
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Bridgestone Sports Co Ltd
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0466—Heads wood-type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0416—Heads having an impact surface provided by a face insert
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0458—Heads with non-uniform thickness of the impact face plate
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
    • A63B53/0412—Volume

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Golf Clubs (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf club head with a coating film having superior abrasion resistance in the coating film of a face part and preventing crack of the coating film of a body part. <P>SOLUTION: This metal hollow golf club head 1 is provided with a titanium alloy face part 2, a crown part 3, a sole part 4, a side part 5, and a hosel part 6. A thick wall part 9 is provided at the central part in the back face of the face part and its circumferences become thin wall parts 10 and 11. The whole body is covered with the coating film and the coating film of the face part 2 has a thickness T<SB>1</SB>equal to or more of the thickness T<SB>2</SB>of the coating film of the body part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は中空ウッド型のゴルフクラブヘッドに係り、特に塗膜を有するゴルフクラブヘッドに関する。   The present invention relates to a hollow wood type golf club head, and more particularly to a golf club head having a coating film.

金属製の中空ウッド型のゴルフクラブヘッドに塗膜を設けることは周知である（例えば特許文献１〜３）。   It is well known to provide a coating film on a metal hollow wood golf club head (for example, Patent Documents 1 to 3).

このうち、特開２００５−２７０５１８号には、フェース部にのみ塗膜を設けたり、ゴルフクラブヘッドの全体に塗膜を設けることが記載されている。特開２０００−７２９８４号、特開２００３−３１０８０５号には複層の塗膜を設けることが記載されている。
特開２００５−２７０５１８号 特開２０００−７２９８４号 特開２００３−３１０８０５号 Of these, Japanese Patent Application Laid-Open No. 2005-270518 describes that a coating film is provided only on the face portion or a coating film is provided on the entire golf club head. Japanese Patent Application Laid-Open No. 2000-72984 and Japanese Patent Application Laid-Open No. 2003-310805 describe that a multilayer coating film is provided.
JP-A-2005-270518 JP 2000-72984 A JP 2003-310805 A

一般に、塗膜は厚い方が耐摩耗性に優れるが、塗膜割れが生じ易くなる。逆に、塗膜が薄いと、耐摩耗性は低いが塗膜割れに対しては強くなる。   Generally, the thicker the coating film, the better the wear resistance, but the coating film tends to crack. On the contrary, if the coating film is thin, the wear resistance is low, but it is strong against coating film cracking.

本発明は、フェース部の塗膜の耐摩耗性に優れ、しかもボディー部の塗膜の割れが防止される塗膜付きゴルフクラブヘッドを提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a golf club head with a coating film that has excellent wear resistance of the coating film on the face portion and that prevents cracking of the coating film on the body portion.

請求項１のゴルフクラブヘッドは、フェース部と、ボディー部のうち少なくともクラウン部の前部とに塗膜が設けられている中空ウッド型のゴルフクラブヘッドにおいて、該フェース部の塗膜厚さＴ１がボディー部の塗膜厚さＴ２以上であることを特徴とするものである。 The golf club head according to claim 1 is a hollow wood type golf club head in which a coating film is provided on a face portion and at least a front portion of a crown portion of a body portion. 1 is a coating thickness T 2 or more of the body portion.

請求項２のゴルフクラブヘッドは、請求項１において、Ｔ１が１００〜２００μｍであり、Ｔ２がＴ１の３０〜１００％であることを特徴とするものである。 The golf club head of claim 2 is characterized in that, in claim 1, T 1 is 100 to 200 μm and T 2 is 30 to 100% of T 1 .

請求項３のゴルフクラブヘッドは、請求項１又は２において、塗膜は少なくとも２層よりなり、最外層の塗膜層の硬度が他の塗膜層の硬度よりも高いことを特徴とするものである。   A golf club head according to claim 3 is characterized in that, in claim 1 or 2, the coating film comprises at least two layers, and the hardness of the outermost coating layer is higher than the hardness of the other coating layers. It is.

請求項４のゴルフクラブヘッドは、請求項１ないし３のいずれか１項において、フェース部の塗膜がウレタン系であり、ボディー部の塗膜がポリエステル系であることを特徴とするものである。   According to a fourth aspect of the present invention, the golf club head according to any one of the first to third aspects is characterized in that the coating film of the face portion is urethane-based and the coating film of the body portion is polyester-based. .

本発明のゴルフクラブヘッドにあっては、フェース部の塗膜厚さＴ１がボディー部の塗膜厚さＴ２よりも大きいので、フェース部の塗膜の耐摩耗性が良好である。また、クラウン部などボディー部の塗膜の塗膜割れが防止ないし抑制される。このボディー部の塗膜厚さを小さくすることにより、塗膜重量を抑制することができる。 In the golf club head of the present invention, since the film thickness T 1 of the face portion is greater than the film thickness T 2 of the body portion, the wear resistance of the coating film of the face portion is good. Moreover, the crack of the coating film of the body part such as the crown part is prevented or suppressed. By reducing the coating thickness of the body portion, the coating weight can be suppressed.

以下、図面を参照して実施の形態について説明する。図１は実施の形態に係るゴルフクラブヘッド１の斜視図、図２は図１のII−II線に沿う断面図、図３は図１のIII−III線に沿う断面図である。   Hereinafter, embodiments will be described with reference to the drawings. 1 is a perspective view of a golf club head 1 according to an embodiment, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a sectional view taken along line III-III in FIG.

中空部を有する金属製のゴルフクラブヘッド１は、フェース部２と、クラウン部３と、ソール部４と、サイド部５と、ホゼル部６とを有する。このホゼル部６にシャフト７が挿入され、接着剤で固定されることによりゴルフクラブが構成される。   A metal golf club head 1 having a hollow portion includes a face portion 2, a crown portion 3, a sole portion 4, a side portion 5, and a hosel portion 6. A shaft 7 is inserted into the hosel portion 6 and fixed with an adhesive to constitute a golf club.

この実施の形態では、フェース部２の裏面の中央部が肉厚の大きな肉厚部９となっており、その周囲が肉厚の小さな肉薄部１０，１１となっている。この肉厚部９の上側の肉薄部１１は、フェース部２の幅方向に延在する。   In this embodiment, the central portion of the back surface of the face portion 2 is a thick portion 9 having a large thickness, and the surrounding portions are thin portions 10 and 11 having a small thickness. A thin portion 11 on the upper side of the thick portion 9 extends in the width direction of the face portion 2.

肉薄部１０は、肉厚部９の両サイド及び下側を回り込むように略Ｕ字形に延在している。   The thin portion 10 extends in a substantially U shape so as to go around both sides and the lower side of the thick portion 9.

肉厚部９は、上下方向には２３ｍｍ以上延在することが好ましい。この２３ｍｍはゴルフボールの直径に由来する。肉厚部９の左右幅は、肉厚部９の上下幅よりも大きいことが好ましく、特に２．０〜５．０倍程度が好ましい。これは、一般に、ゴルフクラブヘッドのフェース形状が上下幅より左右幅が大きいためである。   The thick portion 9 preferably extends 23 mm or more in the vertical direction. This 23 mm is derived from the diameter of the golf ball. The left and right width of the thick portion 9 is preferably larger than the vertical width of the thick portion 9 and is preferably about 2.0 to 5.0 times. This is because the face shape of a golf club head is generally larger in the left-right width than the vertical width.

肉厚部９の周縁の上下左右の最端部からフェース部２の周縁部までの距離は、肉厚部９の上側では上下方向に１０〜１８ｍｍ程度存在することが好ましく、肉厚部９の下側では上下方向に３〜１８ｍｍ程度存在することが好ましく、肉厚部９のトウ側では左右方向に１０〜２０ｍｍ程度存在することが好ましく、肉厚部９のヒール側では左右方向に１０〜２０ｍｍ程度存在することが好ましい。   The distance from the top, bottom, left, and right end of the peripheral portion of the thick portion 9 to the peripheral portion of the face portion 2 is preferably about 10 to 18 mm in the vertical direction above the thick portion 9. On the lower side, it is preferably present in the vertical direction of about 3 to 18 mm, on the toe side of the thick part 9 is preferably present in the horizontal direction of about 10 to 20 mm, and on the heel side of the thick part 9, It is preferable to exist about 20 mm.

肉厚部９の厚さは一様であってもよく、肉厚部９の中心ほど段階的に又は連続的に厚くなるものであってもよい。肉厚部９の厚さ（不均一厚の肉厚部の場合は、平均厚さ）は、肉薄部１０，１１の厚さの１．４〜４．０倍特に１．５〜３．０倍であることが好ましい。ゴルフクラブヘッドの材質が７５０００〜１１０００ｋｇｆ／ｍｍ２（７．３５〜１０．７８×１０６Ｐａ）のチタン合金等である場合、肉厚部９の厚さは２．２〜３．５ｍｍ程度が好ましい。この厚さが過度に大きいと、ゴルフクラブヘッドの重心が浅くなり、バックスピン量が減少して打球が上がりにくくなるおそれがある。肉薄部１０，１１の厚さは上記ヤング率の合金の場合１．８〜２．２ｍｍ程度が好ましい。 The thickness of the thick portion 9 may be uniform, or may be thicker stepwise or continuously as the center of the thick portion 9. The thickness of the thick portion 9 (average thickness in the case of a non-uniform thick portion) is 1.4 to 4.0 times the thickness of the thin portions 10 and 11, particularly 1.5 to 3.0. It is preferable that it is double. When the material of the golf club head is a titanium alloy of 75,000 to 11000 kgf / mm 2 (7.35 to 10.78 × 10 6 Pa), the thickness of the thick portion 9 is preferably about 2.2 to 3.5 mm. If this thickness is excessively large, the center of gravity of the golf club head becomes shallow, and the amount of backspin may be reduced, making it difficult to raise the hit ball. In the case of the Young's modulus alloy, the thickness of the thin portions 10 and 11 is preferably about 1.8 to 2.2 mm.

このゴルフクラブヘッド１にあっては、フェース部２と、クラウン部３と、サイド部５とに塗膜（図示略）が設けられている。ソール部４は塗膜が設けられてもよく、設けられなくてもよい。   In the golf club head 1, a coating film (not shown) is provided on the face portion 2, the crown portion 3, and the side portion 5. The sole portion 4 may or may not be provided with a coating film.

フェース部２の塗膜厚さＴ１は、その他のボディー部（クラウン部３及びサイド部５）の塗膜厚さＴ２よりも大である。好ましくはＴ１は１００〜２００μｍ特に１２０〜１８０μｍであり、Ｔ２はＴ１の３０〜１００％特に５０〜１００％である。 Coating thickness T 1 of the face portion 2 is greater than the coating thickness T 2 of the other body portion (crown portion 3 and the side portion 5). Preferably T 1 is 100 to 200 μm, in particular 120 to 180 μm, and T 2 is 30 to 100% of T 1 , in particular 50 to 100%.

フェース部２の塗膜としてはウレタン系塗膜特に２液硬化型ウレタン系塗膜が好適であり、ボディー部の塗膜としてはポリエステル系塗膜特に熱硬化型ポリエステル系が好適である。ただし、ボディー部はアクリル系、エポキシ系、塩化ビニル系などであってもよい。   As the coating film for the face portion 2, a urethane coating film, particularly a two-component curable urethane coating film, is suitable, and as the coating film for the body portion, a polyester coating film, particularly a thermosetting polyester coating is suitable. However, the body portion may be acrylic, epoxy, vinyl chloride or the like.

このフェース部２の膜厚の大きいウレタン系塗膜は耐摩耗性に優れる。また、ボディー部の膜厚の小さいポリエステル系等の塗膜は塗装割れしにくい。なお、２液硬化型ウレタン系塗膜は安価であると共に、厚塗りし易い。熱硬化型ポリエステル系塗膜は、その塗料の粘度が低く、薄く均一に塗り易い。   The urethane coating film having a large film thickness of the face portion 2 is excellent in wear resistance. In addition, a coating film made of polyester or the like having a small film thickness on the body portion is difficult to crack. The two-component curable urethane coating film is inexpensive and easy to apply thickly. A thermosetting polyester-based coating film has a low viscosity of the coating and is easy to apply thinly and uniformly.

図１〜３ではフェース部２の裏面に凹みによって肉薄部１０，１１を設けているが、図４のゴルフクラブヘッド１Ａのように、フェース部２の前面中央付近を凹ませることによりフェース部２の前面側に肉薄部１３を設けてもよい。このようにフェース部前面に凹状の肉薄部１３を設けると、この肉薄部１３に塗料を厚く塗って塗膜厚さの大きい塗膜を形成することが容易となる。   1 to 3, the thin portions 10 and 11 are provided on the back surface of the face portion 2 by dents, but the face portion 2 is formed by denting the vicinity of the front center of the face portion 2 as in the golf club head 1A of FIG. You may provide the thin part 13 in the front side of. When the concave thin portion 13 is provided on the front surface of the face in this way, it becomes easy to form a coating film having a large coating thickness by applying a thick coating to the thin portion 13.

なお、ボディー部の塗膜はクラウン部３の前半側にのみ設けてもよいが、見栄えを良くするために上記実施の形態のようにクラウン部３及びサイド部５についてはその全面に塗膜を設けるのが好ましい。   The coating film of the body part may be provided only on the first half side of the crown part 3, but in order to improve the appearance, the coating film is applied to the entire surface of the crown part 3 and the side part 5 as in the above embodiment. It is preferable to provide it.

塗膜は１層でもよいが、２層以上とするのが好ましく、特に最表層の塗膜として硬度の高い塗膜層を設け、傷付き防止を図るのが好ましい。   Although the coating film may be one layer, it is preferable to have two or more layers, and it is particularly preferable to provide a coating layer with high hardness as the outermost coating layer to prevent scratches.

本発明は、ドライバー、フェアウェーウッド、その他これに近似したユーティリティクラブに適用可能である。   The present invention is applicable to drivers, fairway woods, and other utility clubs similar to these.

容積３５０ｃｃの中空のチタン合金製のドライバーの全外面に対しポリエステル系塗料を複数回塗布して表１に示す厚さの塗膜を形成した。このゴルフクラブヘッドを長さ４４インチのシャフトに取り付けてドライバーとした。このドライバーについて、フェース強度、打感及び塗膜強度を次のようにして評価した。   Polyester paint was applied several times to the entire outer surface of a 350 cc hollow titanium alloy driver to form a coating film having the thickness shown in Table 1. The golf club head was attached to a 44 inch long shaft to obtain a driver. For this driver, the face strength, feel and coating strength were evaluated as follows.

フェース強度は塗装の剥離によりフェース金属面が見えた部分を顕微鏡にて確認することによって測定した。金属面に対して傷が付いているか、大きさがどの程度かを相対的に評価した。   The face strength was measured by confirming with a microscope the part where the face metal surface was visible by peeling off the paint. A relative evaluation was made as to whether the metal surface was scratched or how large.

打感は被験者１０人が実打して相対的に評価した官能評価である。結果は１０人の平均を〇×で置き換えた。   The hit feeling is a sensory evaluation relatively evaluated by 10 test subjects. As a result, the average of 10 people was replaced with Ox.

塗膜強度は洗浄前の汚れの残ったボールを使用し、屋外で１００発×１０人の実打を行い、塗装のはがれ具合を相対的に評価した。   The film strength was evaluated by using a ball with dirt remaining before washing, hitting 100 shots × 10 people outdoors, and relatively evaluating the degree of paint peeling.

結果を表１に示す。   The results are shown in Table 1.

Figure 2007159984
Figure 2007159984

表１の通り、実施例３〜５のように塗膜厚さＴ１を１００〜２００μｍとし、Ｔ２をＴ１の３０〜１００％とすることにより、打感及び塗膜強度等のバランスがはかれ、良好な結果が得られる。 As shown in Table 1, as in Examples 3 to 5, the coating thickness T 1 is set to 100 to 200 μm, and T 2 is set to 30 to 100% of T 1. Good results are obtained.

実施の形態に係るゴルフクラブヘッドの斜視図である。1 is a perspective view of a golf club head according to an embodiment. 図１のII−II線に沿う断面図である。It is sectional drawing which follows the II-II line of FIG. 図１のIII−III線に沿う断面図である。It is sectional drawing which follows the III-III line of FIG. 別の実施の形態に係るゴルフクラブヘッドの断面図である。It is sectional drawing of the golf club head which concerns on another embodiment.

符号の説明Explanation of symbols

１，１Ａ ゴルフクラブヘッド
２，２Ａ フェース部
３ クラウン部
４ ソール部
５ サイド部
６ ホゼル部
９ 肉厚部
１０，１１，１３ 肉薄部 DESCRIPTION OF SYMBOLS 1,1A Golf club head 2,2A Face part 3 Crown part 4 Sole part 5 Side part 6 Hosel part 9 Thick part 10, 11, 13 Thin part

Claims (4)

フェース部と、ボディー部のうち少なくともクラウン部の前部とに塗膜が設けられている中空ウッド型のゴルフクラブヘッドにおいて、該フェース部の塗膜厚さＴ１がボディー部の塗膜厚さＴ２以上であることを特徴とするゴルフクラブヘッド。 A face portion, the hollow wood-type golf club head of the coating film and the front of at least the crown portion of the body portion is provided, the coating thickness of the coating thickness T 1 of the face portion and body portion golf club head which is characterized in that at T 2 or more. 請求項１において、Ｔ１が１００〜２００μｍであり、Ｔ２がＴ１の３０〜１００％であることを特徴とするゴルフクラブヘッド。 According to claim 1, T 1 is 100-200 [mu] m, the golf club head, wherein T 2 is from 30 to 100% of the T 1. 請求項１又は２において、塗膜は少なくとも２層よりなり、最外層の塗膜層の硬度が他の塗膜層の硬度よりも高いことを特徴とするゴルフクラブヘッド。   3. The golf club head according to claim 1, wherein the coating film comprises at least two layers, and the hardness of the outermost coating layer is higher than the hardness of the other coating layer. 請求項１ないし３のいずれか１項において、フェース部の塗膜がウレタン系であり、ボディー部の塗膜がポリエステル系であることを特徴とするゴルフクラブヘッド。   4. The golf club head according to claim 1, wherein the coating film of the face portion is urethane-based and the coating film of the body portion is polyester-based.
JP2005363560A 2005-12-16 2005-12-16 Golf club head Expired - Fee Related JP4816059B2 (en)

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